Clock



FIG. 1 is a top plan view of a "clock" in accordance with the present invention;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a back side elevational view thereof;

FIG. 5 is left side view thereof;

FIG. 6 is a right side view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a "clock", as shown and described. 